// Copyright 2013 Ronald Schlenker, www.technewlogic.de.
// 
// This file is part of Byond.
// 
// Byond is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 2 of the License, or
// (at your option) any later version.
// 
// Byond is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
// 
// You should have received a copy of the GNU General Public License
// along with Byond.  If not, see <http://www.gnu.org/licenses/>.

using System;
using System.Collections.Generic;
using Byond.Midi;

namespace Byond.AudioMidi
{
	public abstract class MidiBase : IMidi
	{
		public abstract event Action<MidiMessage> OnMessage;

		private readonly List<NoteOnInfo> _noteOnCache = new List<NoteOnInfo>();

		public virtual void SendMidiMessage(MidiMessage message)
		{
			var noteOnMessage = message as NoteOnMessage;
			if (noteOnMessage != null)
				_noteOnCache.Add(new NoteOnInfo(noteOnMessage.Channel, noteOnMessage.Pitch));
		}

		public void ClearAllNoteOns()
		{
			foreach (var noteOnInfo in _noteOnCache)
			{
				SendMidiMessage(
					new NoteOffMessage(
						new Channel(noteOnInfo.Channel),
						new Pitch(noteOnInfo.Pitch),
						0, 0, 0));
			}

			_noteOnCache.Clear();
		}
	}
}